Patents by Inventor Robert K. Rand

Robert K. Rand has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4076263
    Abstract: Skates employing balls as the primary rolling elements may be used in lieu of roller skates for street hockey or indoors on wood floors, concrete or other hard surfaces. In the preferred form the skate includes two balls, preferably of semi-hardened rubber, metal, wood, plastic or the like, one in the front and one at the rear of the skate. Each ball is supported by a set of rolling supports which allow the ball to rotate freely in a forward or backward direction but inhibits rotation of the ball in other directions. The supports include at least two transverse shafts on which are mounted spaced rollers or rings of different diameters and contoured to mate with the upper portion of the ball. The different size rollers are independently rotatable on the shaft to compensate for the different surface speeds of the ball as it rolls forwards or backwards.
    Type: Grant
    Filed: November 20, 1975
    Date of Patent: February 28, 1978
    Inventor: Robert K. Rand